Скачать или смотреть Removing chromatic aberration in GIMP

In this video I show how to remove purple fringes around stars - which are the effect of chromatic aberration. It may be interesting for the users of refractors and photographic lenses.

The trick is to invert the colors of the image, so the magenta-pinkish fringes become green, and then apply the equivalent of HLVG / SCNR process, which I described in the previous video.

To keep brightness of pixels at the same level, after removing purple fringes it is advised to use the layer with the original image as a luminance for the image with removed fringes (i.e. in Luminance blending mode) - in this way we get the image without fringes, but in the original brightness.

All details in the video. Enjoy! :)